<?php
define('DB_HOST','localhost');
define('DB_USER','lingyufan');
define('DB_PASS','123456');
define('DB_NAME','review_app');
//新建连接
$conn=new mysqli(DB_HOST,DB_USER,DB_PASS,DB_NAME);

//检查链接
if($conn->connect_error){
   die("链接失败".$conn->connect_error);
}


?>
